Mark the date (MarkiplierxReader)

Your younger sister is dragging you to "Pax East" so she can meet some youtubers, you can barely remember their names. You wouldn't have come but mom said that you had to do you could "escort Sydney" but she was 18 and in all honesty could have gone herself. Upon arrival your sister catches a cold, you meet an unlikely stranger in the pharmacy who invites you to go somewhere that may change your life